Biomechanical trade-offs in manual material handling: Some tasks reduce lumbar loading but increase thoracic loading

Perawat merupakan profesi tenaga kesehatan terbanyak di rumah sakit yang harus menangani dan merawat pasien selama 24 jam dan melakukan asuhan keperawatan yang menerapkan tindakan manual material handling. Manual material handling berisiko menimbulkan beban kerja fisik yang ditandai dengan adanya nyeri di daerah otot yang disebut dengan keluhan muskuloskeletal. Tujuan penelitian ini adalah untuk mengetahui hubungan beban kerja fisik dengan keluhan muskuloskeletal pada perawat di ruang Lely 1 dan 2 RSUD Buleleng. Penelitian ini merupakan deskriptif korelasional dengan rancangan penelitian cross sectional. Sampel dalam penelitian ini berjumlah 25 responden yang dipilih dengan metode probability sampling yaitu total sampling. Instrumen penelitian yang digunakan dalam penelitian ini yaitu cardiovascular load dengan menggunakan ten pulse method dan Nordic Body Map. Hubungan beban kerja fisik dengan keluhan muskuloskeletal pada perawat dianalisis menggunakan Pearson Product Moment karena data berdistribusi normal. Hasil penelitian menunjukkan bahwa sebagian besar responden memiliki beban kerja fisik katagori sangat ringan (84%) dan keluhan muskuloskeletal kategori rendah (84%). Uji Pearson Product Moment menunjukkan adanya hasil yang signifikan dengan nilai p yaitu 0,000, r=0,806. Kesimpulan dalam penelitian ini yaitu ada hubungan yang positif antara beban kerja fisik dengan keluhan muskuloskeletal pada perawat di ruang Lely 1 dan 2 RSUD Buleleng. Berdasarkan hasil penelitian, disarankan untuk menerapkan sikap ergonomis sesuai prosedur dalam memberikan asuhan keperawatan.

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System Dynamics Model Application for Ergonomic Assessment of Manual Material Handling Tasks

Modular and Offsite Construction (MOC) Summit Proceedings ◽

10.29173/mocs30 ◽

2016 ◽

Cited By ~ 1

Author(s):

Hossein Abaeian ◽

Osama Moselhi ◽

Mohamad Al-Hussein

Keyword(s):

System Dynamics ◽

Material Handling ◽

Dynamic Equilibrium ◽

Project Managers ◽

Dynamics Modeling ◽

Work Related ◽

Manual Material Handling ◽

Compressive Loads ◽

Levels Of Automation ◽

Free Body

Despite increased levels of automation in manufacturing occupations in recent years, many activities are still performed through human intervention and involve Manual Material Handling (MMH), thus exposing workers to stress due to over-exertion and potential Work-Related Musculoskeletal Disorders (WRMSDs). An early ergonomic and physical demand assessment of work activities is critical to reducing exposure to risk and to maintaining desired levels of productivity. Biomechanics consists of applying concepts of static and dynamic equilibrium to different parts of the human musculoskeletal system using free-body diagrams to estimate muscle force and loads generated across the joints and tissues. System dynamics is a powerful tool applied in resolving complex problems with different influencing variables. This technique can help designers and managers to understand, evaluate and simulate the factors causing problems in the system. This paper presents the application of System Dynamics modeling to assess the biomechanical risks associated with manual material handling tasks. The case study presents predicted cumulative biomechanical compressive loads from material handling task and can assist project managers to understand and reduce exposure to ergonomic risks in the workplace.

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Do overweight/obesity and low levels of leisure-time vigorous physical activity moderate the effect of occupational physical activity on self-rated health of construction workers?

International Archives of Occupational and Environmental Health ◽

10.1007/s00420-021-01771-2 ◽

2021 ◽

Author(s):

M. Van den Berge ◽

S. H. Van Oostrom ◽

H. F. Van der Molen ◽

S. J. W. Robroek ◽

C. T. J. Hulshof ◽

...

Keyword(s):

Physical Activity ◽

Material Handling ◽

Vigorous Physical Activity ◽

Construction Workers ◽

Low Level ◽

Self Rated Health ◽

Manual Material Handling ◽

Strenuous Work ◽

Low Levels

Abstract Purpose To investigate the combined effects of occupational physical activity (OPA) and either overweight/obesity or low levels of leisure-time vigorous physical activity (LTVPA) on self-rated health. Methods A longitudinal study was performed among 29,987 construction workers with complete data on 2 Workers’ Health Surveillance Programs during 2010–2018. Self-reported OPA involved strenuous work postures and manual material handling. Low level of LTVPA was defined as self-reported vigorous activity for less than three times per week lasting at least 20 min per session. Overweight and obesity were based on Body Mass Index (BMI) (25.0 ≤ BMI < 30.0 kg/m2 and BMI ≥ 30.0 kg/m2, respectively) using measured body height and weight. Self-rated health was measured using a single item question. Logistic regression analysis was used to investigate the associations between the separate risk factors at baseline and self-rated health at follow-up. The combined effects of demanding OPA and either overweight/obesity or low level of LTVPA on self-rated health were analyzed using the relative excess risk due to interaction (RERI). Results Mean follow-up duration was 31.7 (SD = 14.9) months. Construction workers with strenuous work postures (OR 1.35 95% CI 1.25–1.46), manual material handling (OR 1.29 95% CI 1.19–1.40), obesity (OR 1.31 95% CI 1.17–1.47) and low LTVPA (OR 1.13 95% CI 1.01–1.25) were more likely to report poor self-rated health at follow-up. No statistically significant interaction effects were found for OPA and obesity or low LTVPA. Conclusions OPA, obesity and low level of LTVPA were separate risk factors for poor self-rated health, but did not appear to have a synergistic effect.

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